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Oracle® Fusion Middleware Java API Reference for Oracle Coherence 12c (12.1.3.0.0) E47890-01 |
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java.lang.Object
com.tangosol.util.SegmentedHashMap.EntryActionAdapter
com.tangosol.util.SegmentedHashMap.RemoveAction
com.tangosol.util.SegmentedConcurrentMap.ConditionalRemoveAction
protected class SegmentedConcurrentMap.ConditionalRemoveAction
Action support for a conditional remove(). The action performs a logical locked remove if the entry is currently mapped to the assumed value, and is expected to run while holding the segment-lock for the specified key. If the Entry corresponding to the specified key is still necessary in the map (e.g. for representing a lock state), the Entry may not be physically removed, but rather converted to be synthetic.
The context object for a ConditionalRemoveAction is the assumed associated value.
The result of invoking a ConditionalRemoveAction is the previous value associated with the specified key if it is successfully removed, or NO_VALUE if the key is not mapped to the assumed value. Note that a synthetic Entry does not represent a key-value mapping, so NO_VALUE is returned if a matching synthetic Entry is found.
Constructor Summary | |
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protected |
SegmentedConcurrentMap.ConditionalRemoveAction() |
Method Summary | |
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java.lang.Object |
invokeFound(java.lang.Object oKey, java.lang.Object oContext, SegmentedHashMap.Entry[] aeBucket, int nBucket, SegmentedHashMap.Entry entryPrev, SegmentedHashMap.Entry entryCur) Invoke some action, holding the segment lock, when a matching Entry is found. |
Methods inherited from class com.tangosol.util.SegmentedHashMap.EntryActionAdapter |
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invokeNotFound, isComplete |
Constructor Detail |
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protected SegmentedConcurrentMap.ConditionalRemoveAction()
Method Detail |
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public java.lang.Object invokeFound(java.lang.Object oKey, java.lang.Object oContext, SegmentedHashMap.Entry[] aeBucket, int nBucket, SegmentedHashMap.Entry entryPrev, SegmentedHashMap.Entry entryCur)
invokeFound
in interface SegmentedHashMap.EntryAction
invokeFound
in class SegmentedHashMap.RemoveAction
oKey
- the key to which the action is appliedoContext
- opaque context specific to the actionaeBucket
- the bucket arraynBucket
- the index into the bucket arrayentryPrev
- the Entry object immediately preceding the Entry that was found, or nullentryCur
- the Entry object that was found
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Oracle® Fusion Middleware Java API Reference for Oracle Coherence 12c (12.1.3.0.0) E47890-01 |
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